Thirty-seven Dutch- and German-built Do 24s had been sent to the East Indies by the time of the German occupation of the Netherlands in June 1940. Until the outbreak of war, these aircraft would have flown the tri-color roundel. Later, to avoid...

Thirty-seven Dutch- and German-built Do 24s had been sent to the East Indies by the time of the German occupation of the Netherlands in June 1940. Until the outbreak of war, these aircraft would have flown the tri-color roundel. Later, to avoid confusion with British or French roundels, Dutch aircraft flew a black-bordered orange triangle insignia. A Dutch Dornier Do 24 is credited with sinking the Japanese destroyer Shinonome on December 17, 1941 while the ship was escorting an invasion fleet to Miri in British Borneo. On 10 January 1942 a Dutch Dornier Do 24K spotted a Japanese invasion fleet heading for Tarakan Island in Dutch Borneo, giving adequate warning so that all oil installations could be destroyed before the Japanese arrived. After the Japanese invasion of the Netherlands East Indies, six surviving Do.24s were transferred to the Royal Australian Air Force in February 1942. They served in the RAAF through most of 1944 as transports in New Guinea, making the Do.24 one of the few aircraft serving operationally on both sides during World War II.
http://en.wikipedia.org/wiki/Dornier_Do_24

leccy (Wed 02 Apr 2014 02:59:10 PM EDT)

What was unique about it Junkers 86's and several Italian aircraft served operationally on both sides during WW2.

Blenhiems could probably count as well.

larry41 (Wed 02 Apr 2014 10:39:44 AM EDT)

A total of 279 Do 24's were built by various manufacturers during the war. The DO 24 was unique in that it served, operationally, for the Allied and Axis forces and was well liked by all.

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